The best theory is inspired by practice.
Science is what we understand well enough to explain to a computer. Art is everything else we do.
A list is only as strong as its weakest link.
Any inaccuracies in this index may be explained by the fact that it has been prepared with the help of a computer.
If you optimize everything, you will always be unhappy.
The important thing, once you have enough to eat and a nice house, is what you can do for others, what you can contribute to the enterprise as a whole.